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Commit fa4d34cc authored by Jean-Christophe PLAGNIOL-VILLARD's avatar Jean-Christophe PLAGNIOL-VILLARD
Browse files

of: introduce helper to manage boolean 



of_property_read_bool

Search for a property in a device node.
Returns true if the property exist false otherwise.

Signed-off-by: default avatarJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: default avatarRob Herring <rob.herring@calxeda.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 98619dcb

include/linux/of.h

+16 −0
Original line number Diff line number Diff line
@@ -342,6 +342,22 @@ static inline int of_machine_is_compatible(const char *compat) 
#define of_match_node(_matches, _node)	NULL

#endif /* CONFIG_OF */



/**

 * of_property_read_bool - Findfrom a property

 * @np:		device node from which the property value is to be read.

 * @propname:	name of the property to be searched.

 *

 * Search for a property in a device node.

 * Returns true if the property exist false otherwise.

 */

static inline bool of_property_read_bool(const struct device_node *np,

					 const char *propname)

{

	struct property *prop = of_find_property(np, propname, NULL);



	return prop ? true : false;

}



static inline int of_property_read_u32(const struct device_node *np,

				       const char *propname,

				       u32 *out_value)